include/binder/MemoryBase.h

/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef ANDROID_MEMORY_BASE_H
#define ANDROID_MEMORY_BASE_H

#include <stdlib.h>
#include <stdint.h>

#include <binder/IMemory.h>


namespace android {

// ---------------------------------------------------------------------------

class MemoryBase : public BnMemory 
{
public:
    MemoryBase(const sp<IMemoryHeap>& heap, ssize_t offset, size_t size);
    virtual ~MemoryBase();
    virtual sp<IMemoryHeap> getMemory(ssize_t* offset, size_t* size) const;

protected:
    size_t getSize() const { return mSize; }
    ssize_t getOffset() const { return mOffset; }
    const sp<IMemoryHeap>& getHeap() const { return mHeap; }

private:
    // Backwards compatibility for libdatabase_sqlcipher (http://b/8253769).
    MemoryBase(const sp<IMemoryHeap>& heap, long offset, unsigned int size);

    size_t          mSize;
    ssize_t         mOffset;
    sp<IMemoryHeap> mHeap;
};

// ---------------------------------------------------------------------------
}; // namespace android

#endif // ANDROID_MEMORY_BASE_H